/*
 Copyright (C) 2010 Kristian Duske

 This file is part of TrenchBroom.

 TrenchBroom is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
 (at your option) any later version.

 TrenchBroom is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with TrenchBroom. If not, see <http://www.gnu.org/licenses/>.
 */

#pragma once

#include <QString>
#include <QTextCursor>
#include <QTextStream>

class QTextEdit;

namespace tb::ui
{

/**
 * Helper for displaying the output of a command line tool in QTextEdit.
 *
 * - Interprets CR and LF control characters.
 * - Scroll bar follows output, unless it's manually raised.
 */
class TextOutputAdapter
{
private:
  QTextEdit* m_textEdit;
  QTextCursor m_insertionCursor;

public:
  explicit TextOutputAdapter(QTextEdit* textEdit);

  /**
   * Appends the given value to the text widget.
   * Objects are formatted using QTextStream.
   */
  template <typename T>
  TextOutputAdapter& operator<<(const T& t)
  {
    QString string;
    QTextStream stream(&string);
    stream << t;
    appendString(string);
    return *this;
  }

private:
  void appendString(const QString& string);
};

} // namespace tb::ui
